Piled sewage treatment equipment for quasi-IV-class water in coastal areas

The utility model provides a coastal region reaching IV-class water splicing sewage treatment device which comprises a grating well, a water collecting tank, a coagulating sedimentation tank, an integrated sewage treatment device, an ozone contact tank and a sodium hypochlorite disinfection tank which are communicated in sequence, wherein the integrated sewage treatment equipment comprises an anaerobic zone, a first-stage anoxic zone, a first-stage aerobic zone, a second-stage anoxic zone, a second-stage aerobic zone and a membrane zone which are communicated in sequence, the integrated sewagetreatment equipment further comprises an equipment room, and a clear water tank is further arranged in the equipment room. The sewage treatment method and the sewage treatment integrated equipment are suitable for sewage treatment in coastal areas, small in occupied area, low in energy consumption, low in investment and operation cost and simple and convenient to operate and maintain, and the effluent quality of the sewa